Share 'battery pack 2P'

Hello,
as I got information, Hobbyking won't be selling Multistar 4S batteries 8 and 10Ah anymore. I would like to build pack from 2x 4Ah which are still in stock in EU. I wanna tape both batteries to one piece and solder power and balance connectors in paralel way. On paralel cells will be always same voltage.
Is it good idea use it like this during discharging ?